Thomas alexandeb hendebson



TV.'A.'HEND'ERS ON.

(No Model.)

PENCIL SHARPE NER.

N0. 353.061. Patented Nov. 23; 1886.

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UNITE S ATES PATENT OEFIcE.

THOMAS ALEXANDER HENDERSON, 0E NATOHEZ, MISSISSIPPI, ASSIGNOB' TOHIMSELF AND AUGUST P. KUEHN, oE SAME PLACE.

PENClL-SHARPENER.

SPECIFICATION forming part of Letters PateritNo. 353,061, dated November23, 1886.

I Application filed June 1 8, 1886. Serial No: 205,551. (No model.)

The object of my invention is to provide ,a'

simple and efficient device for carrying and rotating a pencil incontact with a springpressed plate provided wit-h an abrasive surface.

My invention consists in a sliding carriage mounted on a corrugated barsupported in a suitable frame, the carriage being provided with arubbencovered sleeve which rolls along the corrugated surface of thebar, and with springs for holding the rubber-covered sleeve in contactwith the corrugated surface of the bar, to cause the sleeve to revolveas the carriage is slid along the bar, and in the combination, with thesliding carriage and rotating sleeve, of a spring-supported plate orboard having an abrasive surface, all as hereinafter more fullydescribed.

Theend pieces, A, of the frame of the ma chine are provided with legs a,and are connected .at the back of the machineby a bar, B. In notches 1),formed in the forward ends of the end pieces, are clamped the ends ofthe bar 0 bythe screws (1, passed through the I 7 ends of the bar 0 andinto the end pieces, A.

- the bar 0. Between the bars 6 of the carriage The under surface of thebar C is ribbed or corrugated, and to the bar is fitted a carriage, D,formed of transverse bars e and the downwardly-projecting loops f, whichreach down below the under surface of the corrugated bar 0, and in whichis received the metallic sleeve 9. The sleeve 9 is designed to receivethe pencil to be sharpened,and is split longitudinally, to adapt it topencils of different diameters. Around the sleeve 9, between the loopsf, is placed a covering, h, of elastic rubber, which rolls in contactwith the corrugated surface of D and the top of the corrugated bar 0 isplaced a spring, 2, formed of ametallic plate slit twice in oppositeends, with the lateral arms thus formed bent downward, to cause thespring to press upon the top of the bar 0, and with the central arm bentupward to engage the inner surfaces of the bars 6; but any preferredform of spring may be used.

Upon the inner surfaces of the end pieces, A, are secured inclinedcleats j, the ends of the cleats nearest the corrugated bar 0 being thelowest. From the cleats j is suspended a plate or board, E, by means ofelastic cords or bands 70, the board being held in an inclined positionby contact with the u nder'surfaces of the cleats j. The angle of theboard E, relative to the sleeve 9, is that required for the sharpenedend of the pencil. To the upper surface of the board E is secured apiece ofsandpaper or emery-paper; or the board is coated with sand oremery secured to the surface of the board by glue or other cement; or afine-cut file may be substituted for the sand or emery coated surface. VI

By inserting a pencil in the sleeve 9 so that the end upon which thepoint is desired rests upon and pushes down the board E, and moving thecarriage D back and forth along the bar 0 the end of the pencil is slidalong the abrasi'vesurface of the board E,while the sleeve containingthe pencil is turned by the contact of the rubber covering it with" thecorrugated surface of the bar 0. By means of the sliding and rotarymotions of the pencil and the upward pressure of the board E, due to theelasticity of the bands 70, both the wood and the lead of the pencil arerapidly reducedto the required form.

To retain the rubber bands It in their position on the cleats j, theupper'edges and the ends of the cleats are grooved for the reception ofthe bands.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a pencil-sharpener, the combination, with a sliding and rotatingpencil-holder, of a spring-supported plate provided with an abrasiv'esurface, substantially as shown and described.

2. In a pencil-sharpener, the combination of the sliding carriage D, therubber-covered sleeve journaled in the carriage, the bar 0, arranged tosupport and guide the carriage and to contact with the rubber-coveredsleeve,

5 and the spring-supported board E, provided with an abrasivesurfacesuhstantiallyas herein shown and described.

3. In a pencil-sharpener, the combination of theframe formed of endpieces, A, and the ]on- [0 gitudinal bar 13, and provided with inclinedgrooved cleats j, the board E, having an abrasive surface, the elasticbands 70, extending around the cleats and aroundtho ends of the board E,the corrugated bar 0, the carriage D, placed on the bar and providedwith the spring i, and the sleeve 9, journuled in the carriage Dandhaving the rubber covering h, substantiall y as described. 7

THOMAS ALEXANDER HENDERSON. Vitnesses GEORGE V. Kooiwz, THOMAS J.CARSON.

